Lighter-than-air vehicle



FIG. 1 is a perspective view of the lighter-than-air vehicle;

FIG. 2 is the side view of the vehicle shown in FIG. 1;

FIG. 3 is a front view of the vehicle shown in FIG. 1;

FIG. 4 is a rear view of the vehicle shown in FIG. 1;

FIG. 5 is a top view of the vehicle shown in FIG. 1; and,

FIG. 6 is a bottom view of the vehicle shown in FIG. 1. 

The ornamental design for lighter-than-air vehicle, as shown and described. 